P0DB1

Hybrid/EV Battery Cell Balancing Circuit B Stuck On

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Reduced electric vehicle range
Increased charging time
Uneven heating of the battery
Warning messages on the dashboard
Reduced overall vehicle performance

Causes

Balancing module malfunction
Damage to the wiring in the balancing circuit
Battery control unit software error
Short circuit in balancing circuit
Battery cell degradation

How to Fix

Diagnostics of battery cell condition
Checking the integrity of the balancing circuit wiring
Balancing module testing
Updating the battery management unit software
Replacing faulty balancing system components

Related codes

P0DB0 P0DB2 P0DAE